BC MOF Base GML Types schema. Copyright (c) 2002 BC Ministry of Forests, All Rights Reserved. Encloses a choice of either a Polygon or MultiPolygon geometry. Encloses a choice of either a LineString or MultiLineString geometry. Encloses a choice of LineString, MultiLineString, Polygon or MultiPolygon geometry. Type for spatial metadata properties. Metadata fields are optional, since they are often unknown or not present